Hot-water boiler



July 8, 1930. OLSON 1,770,217

HOT WATER BOILER Filed April 8, 1925 IN VEN TOR ggwlji. Olson ATTORNEY latentediluly 8,1930 1,770,217 it H OLSON; O tSTI PAl L, arINNfi e v I; i .q. iApplieatio n filed s in-is, 1925;. Serial 21,500. j

The present invention relates'to Fheating Theseiand other features of the invention, plants, and more particularly to a'hoiler'for not specifically 'mentioned; will .be more use therein. 7 I r c J fully brought-cut'in the'following description v In heatingthe water'for use in a'heating and accompanying drawings, wherein:

plant, it is desirable to pass the-heated gases Figure 1, is a'view, partly in vertical sec- 55 from a source of heat such as a bed of coal tion, and partly in front elevation, of a'boiler over'a large: area 'ofwa'ter containing commade in accordance with thepres'ent inven-, partments loe f o're' fthe gases are discharged 1 tion; and, V i i v Q into'a stack, and todo thi's with. a minimum Figure 2, is afview in'top elevation of a 10 interference with the passage of the gases water compartment to-be'mounted within to from the heating element'tothe'stack- Fursaid boiler, showing inter-connecting pipes thermore, it isdesirableto keep the amount mounted thereon r f ofwa-ter contained in the boiler" as small as Referring to the drawings in detail, a boiler possible, in accordancewith the well known is'shown having a'bas A of a well known type principle that a given amount of water will of construction, shown infront elevatiom'an 65 heat more rapidly in a broad, shallowpan upper-portion B being shown in vertical'secthan it willina deep cupofsmalldiameter; tion. The boilenis'built upgof assembled An. bj t f'th r einventionis'tq units, and comprises a fire pot section I havmakea looiler having water compartments ing a water j acket2 extending around it with I 2 therein, said'wate'r compartments'being posithe exception of a -feed door opening, not 70 tioned to lie in the path of upwardly passing shown, which may be'of awell known type of 1 heated v gases therein, and to *altern ately construction in hot water and similar boilers. spread and converge said gases in an upward A water compartment 3 forms a closure across passage through said-boiler. the top of the fire pot with theexceptioniof I Another object is to makea boiler'having fiue openings t, which permit the upward a plurality of double conicalshaped chainpassage of heated gases from the fire pot. bers therein with water; compartments of a The compartment 3"is in open-communication size to fit Within such compartments to cause with the water jacket 2 by means 01 troughupwardly passing'gases from a heating ele- 1 like channels 5, a port-ion of the left handfone ment therein to pass over'a large' portion of beingillustrated asbrokenaway to show the 8D the surfaces of said compartments r 5 opening 6 thereof into thewater' jacket. The

In order to attain these ohjects',-there is pro? provision of the trough like channels permit vided, in accordance with one feature ofthe sediment present in the water to. drain oft invention," a boiler having a fire pot witha into the water jacket from which it may be v water-jacket surrounding said fire pot,'and a periodicallyflushed, if desired, and carried 85 water compartment of shallow, double conioii through openings 7' which are for the purcal shape positioned above the fire pot and pose of receiving return pipes when theboiler in open communication with the water jacket is used as a'hot water or steam plant. i surrounding saidfirepot. A'sec'on'd compart "Positioned upon the fire box section is'a v ment of double inverted, truncated conical secondsection 9 supported, thereon by 0on 90 I V passage of waterutherebetween.

shape, is positioned above said compartment nections 12, which may be nipples having and inspaced relation theretrom, said second threaded connectionwith the sections 9 and compartment being in open communication 3L A rim 10 or metal may be secured in, place with the first compartment to allowfora free after the sections are connected to form a gase tight seal between thecompartment 9 and 95 Other compartments, as desired, having the-water jacket'EZ and may he provided'with alternately theishap'e of the first and of the a clean-out door, not shownyof-a type comsecond mentioned compartments, 'may be monly employed in boilers of this character. placed above'said compartments in: spaced This second section is-formed in the shape of relation thereto, as required. two inverted, truncated cones-which'areincones interconnected around the circumferences .of their bases. Other compartments similar to compartment 9 and compartment 13 may be positioned one above the other, as

desired, one only of each being shown in the present illustration.

A top compartment 1 1, has its lower surface shaped similarly to the lower surface of compartment 9 and is finished off on the top in a manner well known in boiler construction. A surrounding rim 15 similar to rim 10 is positioned to seal the space between the edges of compartments 9 and '14-. Outlet openings 16 and 17 are provided to permit water heated in the boiler to flow out into a heating system with which the boiler is intended to be used. It will be noted, in positioning the pipes interconnecting the sections, that one pair is shown placed near the periphery the con partments and one pair near the center thereof. This is for the purpose of providing a water outlet near the upper part-of each co1npartment to permit the upward flow therethrough of the heated water, andalso to provide a pipe near the lower portion of each compartment to permit the downward passage therethrough of sediment contained in the water and thereby prevent said sediment from collecting in the bottom of each compartment, to act as an insulation against the influx of heat therethrough.

A boiler of the type herein described is very eflicient, since, by alternately spreading the heated gases outwardly and then converging them, the gases are made to pass over a large amount of heating surface. The fact that the compartments are relatively shallow also reduces greatly the amount of water contained in each compartment. The passages for the heated gases all slope upwardly and this construction offers a minimum interference with the upward passage of the gases and thereby greatly increase the eiiiciency of operation of the boiler.

WVhile the invention has been described and illustrated as embodied in a cast iron construction for use in a hot water heating plant or low pressure steam plant, it is to be understood that the compartments may be made of sheet metal, such as sheet aluminum, for use in a garage or incubator heater, or a heat er for running water, and that where thus em: ployed, a gas flame may be substituted for the coal fire illustrated and the water acket surrounding the heating element may be in that case dispensed with. The return pipe or supply pipe, as the case may be, in that case would be positioned to enter near the bottom of the lower compartment herein designated 3.

\Vhat I claim is:

- continuous 1. A boiler of the character described having a combustion chamber, distinctly separate compartments respectively of doubleconvex and double-concave configuration, alternately arranged in spaced superposed relation above the combustion chamber, elements enclosing. the spaces between the com part ments to provide circulation'spaces as compartments between adjacent compart ments, connect-ions establishing communication between the interior of the compartments, and other connections establishing communication between the spaces between the compartments and the combustion chamber, and means for deliverin fluid to connected compartments, the arrangement being such that the lower floors of some of the compartments slant downwardly and outwardly and others downwardly and inwardly, and the circulation interconnection being such that the loosened soot, ash or scale will continuously flow ortravel by gravity through respectively-interconnected types of compartments towardsthe lowest portion of the system.

2. A boiler of the character described, having a combustion chamber, a plurality of alternate, double convex and double concave water compartments in vertically spaced relation from one another, and from the combustion chamber, each of the double concave compartments having gas passages centrally thereof and each of the double convex compartments having gas passages adjacent the outer edges thereof, and water conducting nipples inter-connecting each of said compartments with the one next vertically adjacent thereto.

3. A boiler of the character described, having a combustion chamber, a plurality of alternate double convexand double concave water compartments in vertically spaced relation from one another and from the combustion chamber, the double convex compartments beingof smaller diameter than the double concave compartments, and water conducting flues connecting a point near the bottom of each of said compartments with a point substantially midway of the depth of the next lower compartment, and connecting a point near the top of each compartment with a point substantially midway of the height of the next compartment above it to provide a maximum fiow of water upwardly therethrough and to permit the passage of particles heavier than water downwardly therethrough to provide a maximum circulation with a minimum deposit of foreign substances in V the compartments.

4. In a boiler of the character described, a plurality of superposed interconnected compartments, said compartments being alternately of double conical concave and double conical convex shape, all of the compartments having their sides positioned at substantially the same slope with respect totheir base, the double conical concave compartments having an aperture centrallythereof,

a double conical convex compartment being positioned substantially centrally intermediate each superposed'pair of double conical concave compartments, and the double conical convex compartments being of smaller diameter than the doubleconcave compart 1O ments. 5' I p 5. In a boiler of thecharacter described, a plurality'of superposed interconnected "com partments, said compartments being alternately of double concave and double convex shape, the concavity of each of the first mentioned compartments being substantially the same as the convexity of each of the second mentioned compartments, the concave compartments each having a centralaperture 20 therethrough, and the convex-compartments I being positioned substantially centrallyintermediate each pair of concave compartments, and means inter-connecting each compartment with the compartment next overtically adjacent thereto, one of said means being in open communication ata point near the top of each compartment with -'a point spaced downwardly from the top of the next higher compartment and from a point'adja- 30 cent the bottom of each compartment with a point spaced downward from the top of the next lower compartment.

In testimony whereof I aflix my signature.

PAUL H. OLSON. 

